[New-bugs-announce] [issue38375] Enum lookup fails for callable values

[Massimo]

New submission from Massimo <massimo at typish.io>:

```
from enum import Enum

class T(Enum):
  TEST = 1

print(T["TEST"])

class S(Enum):
  TEST = lambda a: a

print(S["TEST"])
```
fails with `KeyError: 'TEST'` on the last line.

----------
components: Interpreter Core
messages: 354003
nosy: typish
priority: normal
severity: normal
status: open
title: Enum lookup fails for callable values
type: behavior
versions: Python 3.7

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue38375>
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